Combined drawing square and miter



Nd Model.)

J. MULLER. COMBINED DRAWING SQUARE AND MITBR.

Patented Feb. 10, 18-85.,

Attorney? UNITED STATES PATENT OFFICE.

COMBINED DRAWING SQUARE AND MITER.

SPECIFICATION forming part of Letters Patent No. 311,911, dated February 10,1885.

' Application filed October 27, 1884. (No model.)

To rtZZ whom it may concern:

Be it known that I,JOHN MiiLLER, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Im provement in Combined Drawing Square and Miter,of which the following is a'specification, reference being had to the accompanying drawings.

My invention relates to combined drawing squares and'miters; and it consists in the construction and novel arrangement of parts, as will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure 1 is a plan View of my improved square and miter. Fig. 2 is a perspective View of the head-piece removed from the rule, and Fig. 3 is a plan view of the rule detached from the head-piece.

Referring by letter to the accompanying drawings, A designates the rule, which is graduated in the usual manner, and may be made of wood, hard rubber, steel, or brass. At one end the rule A is rounded,and provided with a bolt-hole, B, and six pin-holes, C, arranged on the arcs of a circle and on opposite sides of the bolt-hole B. D designates a headpiece, which is provided with .a central bolthole, E, around which eight short pins, F, are arranged in a circle. G designates a headed screw-bolt, which is passed up through the central ho1e,E,in the head-pieceD,and through the central hole or bolt-hole in the rule A, and a I thumb-nut, H,is turned down upon the screwboltto hold the rule and head-piece together.

By loosening the thumb-nut the head-piece D may be lifted from one pin and turned and placed upon another, thereby changing the device from a square to a miteiyand vice versa; or the head-piece may be removed entirely, and the device may be used as a straight-edge when desired. Near the foot of the rule a hole, I, is provided, by which the device may be hung up when not in use.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. The combination, with the rule provided f with a bolt-hole, B, and six pin-holes, C, arranged on the arc of a circle on opposite sides of said bolt-hole, of the head-piece D, provided with the bolt-hole E and eight short pins, F, and the screw-bolt G and thumb-nut H, substantially as specified.

2. The combination,with the rule provided with the bolt-hole and pin-holes, of the single half head-piece having the short pins F, and the screw-bolt and thumb-nut, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses. U

- JOHN MULLER. WVitnesses:

J AKOB WELKER, ALBERT BATOHELDER. 

